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SAE-AISI T6 Steel vs. EN 1.3940 Stainless Steel

Both SAE-AISI T6 steel and EN 1.3940 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T6 steel and the bottom bar is EN 1.3940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
540

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1830
1420
Melting Onset (Solidus), °C 1770
1380
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
17
Density, g/cm3 9.5
7.8
Embodied Carbon, kg CO2/kg material 11
3.3
Embodied Energy, MJ/kg 170
47
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 39
20
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 26 to 63
19
Strength to Weight: Bending, points 21 to 39
19
Thermal Diffusivity, mm2/s 4.7
4.1
Thermal Shock Resistance, points 26 to 64
16

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.030
Chromium (Cr), % 4.0 to 4.8
16.5 to 18.5
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 55.9 to 63.5
64.2 to 71.4
Manganese (Mn), % 0.2 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
12 to 14
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.2 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
0